Deck-sash ratchet.



. A. E. MOKINNON- 4 DECK SASH RATGHET.

APPLICATION FILED DBO.12, 1911.

1,019,068, Patented Mar. 5, 1912.

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unrrnn s'ra'rns PATENT OFFICE.

ALEXANDER E. MGKINNON, OF CHICAGO; ILLINOIS, ASSIGNOR T0 ACME SUPPLYCOMPANY, OF CHICAGO, ILLINOI3, A. CORPORATION OF ILLINOIS.

DECK-SASH RATCHET.

Specification of Letters Patent.

Application filed December 12, 1911. Serial No. 665,307.

Patented Mar. 5, 1912.

To all whom it may concern:

Be it known'that I, ALEXANDER E. Mo- KINNON, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Deck-SashRatchets, of which the following is a specification.

This invention relates to devices for guid-' ing and holding in adjustedposition car ventilator-windows known as deck-sashes, and its object isto provide a device of this kind which is simple in construction andwhich will securely hold the sash in adjusted position without theemployment of spring bolts or other devices liable to stick or otherwiseget out of order.

l/Vith the hereinstated object in View, the invention consists in anovel -construction and arrangement of parts to be hereinafter describedand claimed. 2

In the accompanying drawing, Figure 1 is a vertical section of one sideof the car deck showing the application of the invention. Fig. 2 is afront elevation.

Referring specifically to the drawing, 10 denotes the sash of theventilator, and 11 the frame in which it is hung. To the j ambs oi thesash frame is fastened a plate 12 carrying at its lower end a pivot stud13 which supports the sash, said stud extending horizontally so that thesash may be swung in a vertical plane, as usual. The plate 12 hasperforations to receive screws or other suitable fastening means 14whereby it is secured to the jamb. To one of the sash-stiles is fasteneda bracket comprising a base plate 15 and an outstanding flange 16thereon, said flange having an aperture to receive the pivot stud 13.The base plate 15 has perforations to receive screws or other suitablefastening means 17 whereby it is secured to the sash-stile.

To the sash-stile which carries the hereindescribed bracket is securedthe ratchet device, the same comprising a strip of spring metal which isbent intermediate its endsto form a loop 18 and then brought together ordoubled, as indicated at 19, to form an attaching shank which is placedon the face of the sash-stile, and secured thereto by the screws 17,said shank being located beneath the bracket, and having aperturesthrough which the screws 17 pass, the latter thus serving to fasten thebracket as well as the ratchet device to the sash-stile.

Adjacent toits upper end, the plate carries an outstanding horizontalstud 20 on which is loosely mounted a sleeve or roller 21, which is sopositioned that it extends into the loop 18, said parts thereforeforming a guide and lock for the sash 10. The end of the spring stripwhich forms the upper side of the loop is curved to an arc having forits center the pivot 13. The other end of the strip which forms thelower side of the loop is corrugated intermediate its ends to form adepression 22, and its inner end is inclined upward from the shank 19,as indicated at 23. The outer end of the lower side of the loop has adownward curve 24 in the opposite direction from the incline 23, and isthen curved upward to the upper side of the loop. The roller 21 is inengagement with the lower side of the loop and rides over the same whenthe sash is swung open or closed. When the sash 10 is closed, the rollerseats on the incline 23, which tends to hold the sash in this positionand prevents it from swinging open. Inasmuch as the strip which formsthe loop is resilient, it will yield, and permit the sash to be swungopen, the roller 21 remaining in contact with the lower side of the loopand riding over the same. If the sash is to be held in partly openposition, it will be swunginward until the roller seats in thedepression 22, whereupon the sash is held in this position. As the stripis resilient it will press against the roller and firmly hold the sash.If it is desired to have the sash in full open position, which, inventilators of this type is usually about fifty-five degrees from thehorizontal, said sash is swung inward until it is stopped by the rollerreaching the outer end of the loop. The downward curve 24 then preventsthe sash from accidentally swinging back to closed position. A push orpull on the sash sufiices to adjust or close it, as the loop yields tothe roller.

The device herein described can be easily applied and requires nomodification of the deck or sash structure, it securely holds the sashin adjusted position, and it therefore effectually serves the purposefor which it is designed.

It is to be understood that both ends of the sash frame are equippedwith the hereindescribed device,

I claim:

1. The combination with a pivoted sash and its frame, of a loopedresilient strip carried by the sash and projecting therefrom, and aroller mounted on the frame and extending into the loop in contact Withone side thereof, said side having a depression intermediate its endsand oppositely extending inclines on opposite sides of said depression.

2. The combination with a pivoted sash Copies of this patent may beobtained for and its frame; of a looped resilient strip car ried by thesash and projecting therefrom, and a roller mounted on the frame andextending into the loop in contact With one side thereof, said sidehaving seats for the roller and said seats determining diiferentpositions of the sash.

In testimony whereof I afiiX my signature in presence of twowitnesses.

ALEXANDER E. MOKINNON.

\Vitnesses:

S. J. LEH E H. G. BATOHELOR.

five cents each, by addressing the Commissioner of Patents. Washington,I). C.

